diff --git a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Elements/Predefined/CheckboxGroup.js b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Elements/Predefined/CheckboxGroup.js
index 2143936f29cc5b655f17fdc9bb988ea6a223c34c..eb00a20ef554b2b9d3d3a9e0d2348b44c4c2b81f 100644
--- a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Elements/Predefined/CheckboxGroup.js
+++ b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Elements/Predefined/CheckboxGroup.js
@@ -105,12 +105,12 @@ TYPO3.Form.Wizard.Elements.Predefined.CheckboxGroup = Ext.extend(TYPO3.Form.Wiza
 	 */
 	rebuild: function(component) {
 		this.containerComponent.removeAll();
-		if (this.configuration.options.size() > 0) {
+		if (this.configuration.options.length > 0) {
 			var dummy = this.containerComponent.findById('dummy');
 			if (dummy) {
 				this.containerComponent.remove(dummy, true);
 			}
-			this.configuration.options.each(function(option, index, length) {
+			Ext.each(this.configuration.options, function(option, index, length) {
 				var checkbox = this.containerComponent.add({
 					xtype: 'typo3-form-wizard-elements-basic-checkbox',
 					isEditable: false,
diff --git a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Elements/Predefined/RadioGroup.js b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Elements/Predefined/RadioGroup.js
index 66c5621a8e430b1b5e31294b5b9c8a9cc904d45a..feb4fd093a76ecae61eadb9851ba8ea99140c59f 100644
--- a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Elements/Predefined/RadioGroup.js
+++ b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Elements/Predefined/RadioGroup.js
@@ -105,12 +105,12 @@ TYPO3.Form.Wizard.Elements.Predefined.RadioGroup = Ext.extend(TYPO3.Form.Wizard.
 	 */
 	rebuild: function(component) {
 		this.containerComponent.removeAll();
-		if (this.configuration.options.size() > 0) {
+		if (this.configuration.options.length > 0) {
 			var dummy = this.containerComponent.findById('dummy');
 			if (dummy) {
 				this.containerComponent.remove(dummy, true);
 			}
-			this.configuration.options.each(function(option, index, length) {
+			Ext.each(this.configuration.options, function(option, index, length) {
 				var radio = this.containerComponent.add({
 					xtype: 'typo3-form-wizard-elements-basic-radio',
 					isEditable: false,
diff --git a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left.js b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left.js
index fad28d9a6cbb1437841dbf03281db045378f1465..586d7defb1f0223e1d8b33e56d5829c63da26801 100644
--- a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left.js
+++ b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left.js
@@ -78,7 +78,7 @@ TYPO3.Form.Wizard.Viewport.Left = Ext.extend(Ext.TabPanel, {
 		var allowedTabs = TYPO3.Form.Wizard.Settings.defaults.showTabs.split(/[, ]+/);
 		var tabs = [];
 
-		allowedTabs.each(function(option, index, length) {
+		Ext.each(allowedTabs, function(option, index, length) {
 			var tabXtype = 'typo3-form-wizard-viewport-left-' + option;
 			if (Ext.ComponentMgr.isRegistered(tabXtype)) {
 				tabs.push({
diff --git a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements.js b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements.js
index e1aa8aa8c319240b66629077733c50a5f83164f6..72a06a0d7fb3f664acb51174b2f20e79eae1ad83 100644
--- a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements.js
+++ b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements.js
@@ -46,7 +46,7 @@ TYPO3.Form.Wizard.Viewport.Left.Elements = Ext.extend(Ext.Panel, {
 		var allowedAccordions = TYPO3.Form.Wizard.Settings.defaults.tabs.elements.showAccordions.split(/[, ]+/);
 		var accordions = [];
 
-		allowedAccordions.each(function(option, index, length) {
+		Ext.each(allowedAccordions, function(option, index, length) {
 			var accordionXtype = 'typo3-form-wizard-viewport-left-elements-' + option;
 			if (Ext.ComponentMgr.isRegistered(accordionXtype)) {
 				accordions.push({
diff --git a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Basic.js b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Basic.js
index cb1d31ca57a9ce6c57c694f2c25bd6555b2582a4..4f2e0fdc0f8da199f7b29f07750836e4681e4ba2 100644
--- a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Basic.js
+++ b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Basic.js
@@ -38,7 +38,7 @@ TYPO3.Form.Wizard.Viewport.Left.Elements.Basic = Ext.extend(TYPO3.Form.Wizard.Vi
 		var allowedButtons = TYPO3.Form.Wizard.Settings.defaults.tabs.elements.accordions.basic.showButtons.split(/[, ]+/);
 		var buttons = [];
 
-		allowedButtons.each(function(option, index, length) {
+		Ext.each(allowedButtons, function(option, index, length) {
 			switch (option) {
 				case 'button':
 					buttons.push({
diff --git a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Content.js b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Content.js
index 44d8b147c813080d8f5c36e5bd2762a571a7009e..bfcb0c3f9da7b6e369d2c9f6e42ccb3c0ed449f1 100644
--- a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Content.js
+++ b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Content.js
@@ -38,7 +38,7 @@ TYPO3.Form.Wizard.Viewport.Left.Elements.Content = Ext.extend(TYPO3.Form.Wizard.
 		var allowedButtons = TYPO3.Form.Wizard.Settings.defaults.tabs.elements.accordions.content.showButtons.split(/[, ]+/);
 		var buttons = [];
 
-		allowedButtons.each(function(option, index, length) {
+		Ext.each(allowedButtons, function(option, index, length) {
 			switch (option) {
 				case 'header':
 					buttons.push({
diff --git a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Predefined.js b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Predefined.js
index a2659c08a3f051c966f225a78a47d79c81d6bae3..d1596e90e3bc66aecbc3245f523553ff067c17a8 100644
--- a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Predefined.js
+++ b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Elements/Predefined.js
@@ -38,7 +38,7 @@ TYPO3.Form.Wizard.Viewport.Left.Elements.Predefined = Ext.extend(TYPO3.Form.Wiza
 		var allowedButtons = TYPO3.Form.Wizard.Settings.defaults.tabs.elements.accordions.predefined.showButtons.split(/[, ]+/);
 		var buttons = [];
 
-		allowedButtons.each(function(option, index, length) {
+		Ext.each(allowedButtons, function(option, index, length) {
 			switch (option) {
 				case 'email':
 					buttons.push({
diff --git a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Form.js b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Form.js
index 5b884b5950f0ef912c4cf9e93defeeb5d9d1d12e..89264b98544761f75a9451be85ed31f12bac0ceb 100644
--- a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Form.js
+++ b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Form.js
@@ -108,7 +108,7 @@ TYPO3.Form.Wizard.Viewport.Left.Form = Ext.extend(Ext.Panel, {
 
 		this.accordion.removeAll();
 		if (form) {
-			allowedAccordions.each(function(option, index, length) {
+			Ext.each(allowedAccordions, function(option, index, length) {
 				switch (option) {
 					case 'behaviour':
 						this.accordion.add({
@@ -181,10 +181,11 @@ TYPO3.Form.Wizard.Viewport.Left.Form = Ext.extend(Ext.Panel, {
 			}
 		}, this);
 		if (this.tabEl) {
-			if (tabIsValid && Ext.get(this.tabEl).hasClass('validation-error')) {
-				this.tabEl.removeClassName('validation-error');
-			} else if (!tabIsValid && !Ext.get(this.tabEl).hasClass('validation-error')) {
-				this.tabEl.addClassName('validation-error');
+			var tabEl = Ext.get(this.tabEl);
+			if (tabIsValid && tabEl.hasClass('validation-error')) {
+				tabEl.removeClass('validation-error');
+			} else if (!tabIsValid && !tabEl.hasClass('validation-error')) {
+				tabEl.addClass('validation-error');
 			}
 		}
 	}
diff --git a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Options.js b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Options.js
index b5965ef2e289efd8c00d07a5825cfcbe4b2e33d1..6e51602abec2628b4ab5684865e443084e9dc6a5 100644
--- a/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Options.js
+++ b/typo3/sysext/form/Resources/Public/JavaScript/Wizard/Viewport/Left/Options.js
@@ -120,7 +120,7 @@ TYPO3.Form.Wizard.Viewport.Left.Options = Ext.extend(Ext.Panel, {
 				xtype: 'typo3-form-wizard-viewport-left-options-dummy'
 			});
 		}
-		this.tabEl.removeClassName('validation-error');
+		Ext.get(this.tabEl).removeClass('validation-error');
 		Ext.iterate(this.validAccordions, function(key, value) {
 			this.validAccordions[key] = true;
 		}, this);
@@ -157,10 +157,11 @@ TYPO3.Form.Wizard.Viewport.Left.Options = Ext.extend(Ext.Panel, {
 		var tabIsValid = this.tabIsValid();
 
 		if (this.tabEl) {
-			if (tabIsValid && Ext.get(this.tabEl).hasClass('validation-error')) {
-				this.tabEl.removeClassName('validation-error');
-			} else if (!tabIsValid && !Ext.get(this.tabEl).hasClass('validation-error')) {
-				this.tabEl.addClassName('validation-error');
+			var tabEl = Ext.get(this.tabEl);
+			if (tabIsValid && tabEl.hasClass('validation-error')) {
+				tabEl.removeClass('validation-error');
+			} else if (!tabIsValid && !tabEl.hasClass('validation-error')) {
+				tabEl.addClass('validation-error');
 			}
 		}
 	}